Class MemoryCoOccurrenceFrequencyMatrix

java.lang.Object
net.sourceforge.jiu.color.data.BaseCoOccurrenceFrequencyMatrix
net.sourceforge.jiu.color.data.MemoryCoOccurrenceFrequencyMatrix
All Implemented Interfaces:
CoOccurrenceFrequencyMatrix

public class MemoryCoOccurrenceFrequencyMatrix extends BaseCoOccurrenceFrequencyMatrix
Implements the CoOccurrenceFrequencyMatrix interface by using a large array of values in memory.
Author:
Marco Schmidt
  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    private double[]
    co occurrence frequency values
    private final int
    will be initialized in constructor and never changed
    private int
    total number of values, equals dimension * dimension and data.length
  • Constructor Summary

    Constructors
    Constructor
    Description
    Creates a co-occurrence frequency matrix of given dimension; allocates dimension times dimension double values for internal array; does not call clear() to set everything to zero, must be done by user (or automatically in init).
  • Method Summary

    Modifier and Type
    Method
    Description
    void
    Sets all values of this matrix to zero.
    int
    Returns the dimension of this matrix.
    double
    getValue(int i)
    Returns the value of this matrix at row i, column i.
    double
    getValue(int i, int j)
    Returns the value of this matrix at row j, column i.
    void
    setValue(int i, int j, double newValue)
    Sets value at row j, column i to newValue.

    Methods inherited from class net.sourceforge.jiu.color.data.BaseCoOccurrenceFrequencyMatrix

    computeStatistics, getMean, getScofMean, getScofStddev, getScofSum, getStddev

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
  • Field Details

    • dimension

      private final int dimension
      will be initialized in constructor and never changed
    • numValues

      private int numValues
      total number of values, equals dimension * dimension and data.length
    • data

      private double[] data
      co occurrence frequency values
  • Constructor Details

    • MemoryCoOccurrenceFrequencyMatrix

      public MemoryCoOccurrenceFrequencyMatrix(int dimension)
      Creates a co-occurrence frequency matrix of given dimension; allocates dimension times dimension double values for internal array; does not call clear() to set everything to zero, must be done by user (or automatically in init). Dimension should be number of colors in palette.
      Throws:
      IllegalArgumentException - if dimension is smaller than 1
  • Method Details

    • clear

      public void clear()
      Sets all values of this matrix to zero.
    • getDimension

      public int getDimension()
      Description copied from interface: CoOccurrenceFrequencyMatrix
      Returns the dimension of this matrix.
    • getValue

      public double getValue(int i) throws IllegalArgumentException
      Returns the value of this matrix at row i, column i. Argument is zero-based, so make sure that 0 <= i < getDimension(). Other values will raise an IllegalArgumentException. Simply calls getValue(i, i).
      Parameters:
      i - index into the matrix, must be larger than or equal to 0 and smaller than CoOccurrenceFrequencyMatrix.getDimension()
      Throws:
      IllegalArgumentException
    • getValue

      public double getValue(int i, int j) throws IllegalArgumentException
      Returns the value of this matrix at row j, column i. Both arguments are zero-based, so make sure that 0 <= i, j < getDimension(). Other values will raise an IllegalArgumentException.
      Throws:
      IllegalArgumentException
    • setValue

      public void setValue(int i, int j, double newValue) throws IllegalArgumentException
      Sets value at row j, column i to newValue. Both arguments are zero-based, so make sure that 0 <= i, j < getDimension(). Other values will raise an IllegalArgumentException.
      Throws:
      IllegalArgumentException